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HF 191

A bill for an act relating to the intentional emission of air contaminants into the atmosphere.

2025-2026 Regular Session Introduced by Eddie Andrews and 21 co-sponsors

Prohibits Minnesota's intentional emission of air contaminants to alter temperature, weather, or sunlight; EPC enforces via emergency rules with near-immediate effect upon filing.

Committee report approving bill, renumbered as HF 927.
#airquality #pollution
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Bill Summary · HF 191

HF 191 / HF 927 — Geoengineering Prohibition Summary

Overview

HF 191, introduced February 3, 2025 and later approved by the committee and renumbered HF 927, would create a clear state-level ban on the intentional emission of air contaminants into the atmosphere for the express purpose of influencing temperature, weather, or the intensity of sunlight. The bill places the prohibition under Minnesota’s air-quality framework and directs the Environmental Protection Commission (EPC) to implement rules to administer and enforce the prohibition. The emphasis is on geoengineering activities conducted within the borders of the state.

Purpose and intent

  • Prohibit geoengineering activities that emit air contaminants to affect climate-related factors (temperature, weather patterns, or sunlight intensity) within Minnesota.
  • Ensure state law clearly supersedes conflicting rules or practices by stating that the new rules shall be controlling.
  • Establish a mechanism for rapid rulemaking to prohibit such activities and provide immediate effect when rules are filed, via emergency-rule provisions.

Key provisions

  • Section 1 (455B.133, added subsection 11):

    • Prohibits rules that would allow or permit the intentional emission of air contaminants into the atmosphere within Minnesota for the express purpose of altering temperature, weather, or sunlight.
    • Rules adopted pursuant to this subsection shall be controlling over any contrary law.

  • Section 2 (708C.1 Geoengineering):

    • Explicit prohibition on the intentional emission of air contaminants within the state for the purpose of affecting temperature, weather, or sunlight.
    • The EPC must adopt rules under Chapter 17A to administer the section.
    • EPC may adopt emergency rules under 17A.4(3) and 17A.5(2)(b) to administer the section.
    • Rules may take immediate effect upon filing unless a later date is specified.
    • Rules adopted under this section must be published as a Notice of Intended Action (per 17A.4).

Administrative process and timeline

  • The EPC is responsible for implementing the prohibition through rulemaking.
  • Emergency-rule authority enables near-immediate effect, subject to statutory procedures.
  • Any final rules would be published as a Notice of Intended Action, ensuring public notice and comment pathways per existing rulemaking requirements.
  • Legislative progression (as of the provided record):
    • Introduced Feb 3, 2025 → Subcommittee Feb 5–11, 2025 → Subcommittee recommendation Feb 11, 2025 → Committee passage recommendation Mar 6, 2025 (Yeas 11, Nays 5, Excused 1) → Committee report approved Mar 12, 2025; renumbered HF 927.

Affected parties and impact

  • Directly affects any person or entity operating within Minnesota that might contemplate intentional atmospheric emissions to influence climate, weather, or sunlight.
  • Potentially relevant to state agencies, private entities, and research operations conducting geoengineering activities within state borders.
  • Enforcement and penalties, if any, would be defined through EPC rulemaking under 17A and applicable environmental law.

Relation to existing law

  • Builds on Minnesota’s air-quality framework (Title 455B) by adding a specific geoengineering prohibition.
  • Overrides other laws to the extent of the “Notwithstanding any other law” language in the subsections, directing that the new rules shall be controlling.

Next steps for stakeholders

  • Monitor EPC rulemaking docket for proposed rules implementing the prohibition, including definitions of “air contaminants,” “intentional emission,” and enforcement provisions.
  • Prepare comments on emergency-rule procedures and potential impacts on research, industrial processes, or climate-related experimentation within the state.

If you’d like, I can provide a one-page plain-language briefing or a side-by-side comparison with existing Minnesota air-quality rules.

Compiled from official sources — confirm details with the bill’s official record.

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